I found these problems by your tips on my card reader :
1- I glue my clutch as you said
2- I change a capacitor for reading
3- I change my orings for fuel tubing
4- I rotate the ajuster/screwdriver pin for tension
4- I ajust the contact with my ohmeter and 2 of the leaf
were seeadily in contact, i lower them.
I GET IT WORK - I LOVE YOU ALL - I'm so sorry that i can't help you the same way you did; i'm too much a beginner with HP repairing/using!
It's very difficult to get all these adjustements work in combinations, i think you need a little luck.
Now if someone can tell me how to do the same job on a mint SR-52 with gummy wheel... ;-) I have a lot of card for it...
The little problem that still subsist on my 67 is that i need to pass a NEW card 3 times before really writing on it because the pulling is not regular. Th first time a card is pass, i can see some "tire" mark on the side of the card like morse code. After 4 passes, all the side is mark and the card pass regulary and reading/writing is 100% ok. What to to to correct this problem?
Thanks again!