[Jukebox-list] Wurly 3310 Selector issue

I'm Still looking for some assistance with this machine's intermittent selections. Machine is set on free play and when making a selection both buttons latch but stay latched with no movement / action from the mech. If you leave it like that sometimes after a short bit the buttons release and the mech plays the selection. It almost seems like a timing issue but I'm not really a Wurlkitzer guy so I'm looking for help. Unfortunately no manual either not that it would help with my lack of experience with this brand. Appreciate any guidance Regards, Rick