I have had a 2020 build mmr se for a couple of weeks now and have spent a little bit of time sorting some minor issues.
Adjusted the low hanging flippers level with the lane guides and playfield indents, so it now shoots well. The rh flipper was super sensitive with a finger just touching it without pressing triggering a flip. It also started sticking up occasionally during gameplay. The problem was the proximity to the opto, so I added a thin plastic shim (about 1mm) between the opto board mounting frame and the cabinet to bring it closer to the opto trigger piece. Sorted.
Adjusted the rh rail to stop the ball hanging behind the troll. Last night I also added a thin 2mm strip of plastic, double sided taped to the rear of the back of the rh troll guide as a ball hung a couple of times at the back of the troll hole between the mylar and the troll hole on the inner side of the playfield, when the troll was up. This now ensures the ball does not stick in the groove and just rolls off the back of the troll in to play. It only did this twice and shook out easily, but resulted in a tilt warning and a SDTM. A more permanent solution may be to remove the mechanism and bend the metal guide up a bit.
The damsel ball release up post was also sticking sometimes which required a slight adjustment (bend) on the solenoid bracket. Now works 100%.
All minor stuff with easy fixes.
A couple of other things i have yet to attend are occasionally the optos do not register a castle shot. Generally the next hit registers, and an odd occasional noise from the sound system. Any tips?
Also, the game came with cliffys installed, but the previous owner did not fit the merlin hole carbon protector, citing he had heard it makes it harder to get the ball in the hole. Does anyone have one of these fitted, and if so, how does it affect gameplay?
Also on the merlin hole, I have experienced the ball bouncing out as documented in the NIB fix thread. I added a piece of thin foam tape and have adjusted the scoop and it seems to be a speed thing, a slower ball or a bounce in stays put, while a faster ball shot from the left flipper can bounce out. I might try removing and lowering the mechanism with washers as has been suggested.
I have put almost 200 games on this and can see why it is so highly rated. Flows really well ,great toys, and the rules result in multiballs galore. Sure is pretty too, with the rgb lighting enhancements and large colour display.
Last night i got to battle for the kingdom but bombed one shot short of finishing.