been trying to fix up this Porta One i just got my hands on. when i unpacked it the heads were engaged and i just rotated the big metal wheel and click they disengaged at first the FF and RW only worked if i tilted the entire multitrack standing up otherwise the RW would not click over the FF would work for a second and then get jammed up and stop moving PLAY and RECORD worked just fine I read thru the service manual and did some internet research I sprayed some deoxit in the gear axles. pretty much any gear i could access. but focused on the FF and RW gears on the front of the tape transport things started improving! so I put in a C90 and starting running it FF and RW back and forth to work it in the gears and clean & lube things up better i sprayed more deoxit in there a couple more times and kept working the gears. FF and RW working pretty damn good at this point. but now sometimes the FF or PLAY does not auto stop when it reaches the end of the tape it wants to click over but just doesn't have enough to push it over the edge the RW auto stop still works when it reaches the beginning and the PLAY functionality is starting to stick again and the heads get stuck in the engaged position as well. if i hit PLAY and nudge the big metal wheel it clicks and starts to play. so seems like that gear is justtt on the edge of playing but not enough to get over the hump. i know deoxit is prolly not the best thing to use in this situation but it was what i had on hand and figured it was worth a shot. when things started working again, i thought i was on top of the world. i've been running the tape on PLAY all the way through to the end of hte tape a couple times to hopefully work whatever it sticking on the PLAY mechanism free i'll prolly do it a couple more times also thinking maybe i over deoxit'd things and maybe just needs to dry out for a lil bit. if i had to guess i'd say maybe i need to get some better lube or grease and try to relube some of these moving parts to get things better? what areas should i focus on in regards to the auto stop not clicking over? what areas in regards to the PLAY mechansim not clicking over? and same for the heads getting stuck engaged when hitting PLAY any help of insight is greatly appreciated thanks!