Just finished two build it yourself kits from wolffpactech, great way to get some cool looking displays on the cheap and a little sense of accomplishment when you're done. I did a blue set for a Fathom and a Seawitch. Turned out great.
Here's where the service part comes in though, I got a little busy before finishing the second set, they sat in the box around a year actually(life happens ya know?). So when I'm putting the very last display together I noticed the roll of 2n4403's was missing one component in the middle (totally factory error unrelated to wolffpactech), just had a set of legs taped to the roll. Well I emailed just to check if 2n4401's were compatible cause I had a few laying around. I get an email back in 5 minutes(at midnight). He threw not 1 but 3 in an envelope to me the next day and I didn't even ask for them.
Way Above Expectations!