After buying one or two kits and realizing they're ALWAYS missing something I just loaded up on 20-50 of every size rubber pinball life stocks and got a little tray organizer thing from Home Depot. IMO this is the only way to go, you will always have the rubber size you need and can do full game "shop outs" on demand

b32e2318-dec5-491f-ab05-39bda538b719_400.jpg

http://www.homedepot.com/p/Akro-Mils-44-Combo-Drawer-Small-Parts-Storage-Cabinet-10144/203538913?N=5yc1vZc28p

There are always incorrect and/or missing band sizes in most ring kits
+1 for Fattrain with buying your own individual ones (get a few more than you think you will need especially Slingshot rings and the smaller/smallest rings)

Forget the game kits. Third fattrains way. If you don't want to spend too much Pinball Life has a 125 piece nice assortment kit that I'm still picking through after several shop outs.

http://www.pinballlife.com/index.php?p=product&id=486

I have less experience than many, but it might be that the kits are a little supplier dependent. I have done two games and found them to be perfect (PBRESOURCES and MARCO). My kits include a note saying that if there is an error to let them know and I suspect the next kit out the door is corrected... so at least some times (2/2 for me) the kits are right. My games are late (1976) EM games... if you have a rare game its probably more likely to be wrong as less people have had a chance to correct the kits. I just don't have the room to stock all the stuff I would need so its easier to order the kits and hope they are good... the supplier will send correct stuff if its wrong so for me, the odd chance its wrong is corrected in a few days waiting for the mail. Not a big deal to me. But I fully understand that yes- they might be wrong. If you need the game working as soon as you open the kit, thats probably not the way to go... if its sitting in your house and you can handle it not being completed right away the kits are nice and easy and worth the money to ME.

There are some games which have incorrect rubber diagrams/lists in the manual. I think these are the likely sources of most of the problems.
I order them myself and grab a at least one extra of each size.

I order the kits, but like fattrain I have a complete set of rubber that I can go to for missing or incorrect rings.

i have never successfully replaced all rubbers on a game using a kit

I think there are a few sizes not made anymore... like 2.75" or 1.75" maybe that get subbed in kits. Usually the sub is the next size larger, which i find incorrect. Typically the one size smaller works better. Some of the huge rings on EMs too I think are obsolete.

That may be the reason for some of the kit descrepancies.

Before Gene stopped his operations, you could get a monster bag for $15 at the shows in great colors like orange and purple.

Keep your rubber in air-tight bags so they stay soft and fresh.

I've got sizes they don't make any more in vacuum bags in the fridge.

Hopefully you are not drunk, hungry, and disoriented.

That's what Dalmer said.

I usually am.

I had good success with actionpinball.com rubber kits. With my High Speed, they gave me 2 5 inch rings for the back area on HS, which is correct, but other vendors only give 1 ring or just don't include it altogether. With another game coming, I'am gonna do what fattrain did, and get an organizer and have an assortment of them.

This is what I buy. I usually buy 2 or 3 at a time. Works out great.
http://www.pinballlife.com/index.php?p=catalog&parent=122&pg=1