low amplitude

[johnbicht]

Have finished (mostly) servicing a 3035. Odd problem to me exists. I corrected the beat error to 0 +/-.1ms, timing to +1/3 s/d. The amplitude is in the 240 range, wound at least 40.

I found that the end shake of the balance really was hard to perfect. A tiny movement of the cock screw made a big difference in timing and amplitude.

The movement has a new balance insetting on the dial side - although a perhaps weak KIF spring, a NOS mainspring in barrel - not opened and re-oiled. All oils properly done.

Any ideas? The next thing I might do is remove the mainspring, open the barrel, and put some of the proper oil (which I have) across the spring.