To fix the trunk the trunk needs to spin at proper speed to work with the programing of the game.
#1 clean the trunk gear box grease out, I used something like break cleaner. Its all metal parts in there.
#2 this is important, regrease the gearbox using superlube brand grease.
#3 you're all most done, replace the friggin motor it's 20 years old by god.
I got my motor from kimballspinballs, I had to email him to ask for one as thay are not for sale on his websight.
I did this and the trunk never stops.
If I'm not wrong the board you are talking about will make it so the trunk dosent register hits during rotation. Ugh. Do that it You want it's your choice.
Here's a pic of the grease, trust me don't use any other type of grease or oil.
Best of luck
RVH
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