Little Help Please!!

One of our machines is doing something I've never seen before. It's a 1989 TME HC 912 Tajima that is close to needing a complete overhaul, but it still runs, so I run it. I have one head where the #2 needle sews just fine, but at any, ANY stop (thread break, manual stop, bobbin sensor, etc.) the needle bar drops the presser foot to 1/4" off of the plate! Timing is good, the thread take up lever is at top deadcenter, and the reciprocator is in proper position and acts properly with good spring action.

I am stumped. Any ideas guys?

Thanks

Jamie
Artex Knitting Mills
Union Made in the USA and PROUD OF IT

Well color me really stupid. After taking the head of, and removing the needle bar, I found a little piece of the crap silicone gaskets they used at the botton of the needle bar guide inside the head. I pealed it off with a pen knife, put the head back together and..... it runs again. 2 hours of time spent on a worn out gasket! Sheesh.