How can I get this beat error down?

[Lotus]

Hey guys! Complete amateur here, working on my first project, a Raketa Perpetual Calendar with the Raketa 2628.H movement. 

As per the reading from my timegrapher phone app (yes, please scold me, a Weishi 1000 is at the top of my list to purchase next) the rate is +11 seconds, which is acceptable to me. What isn't acceptable is the beat error, which is an abysmal 4.0ms. How would I go about curing this? 

Also, on an unrelated note, how do I keep springs from flying away? One of the springs for the calendar flew on the floor, luckily I picked it up with a magnet, but it flew away again and this time I cant find it! Now I have to order a donor movement because no one sells the certain spring seperately!

Help is greatly appreciated, thanks my fellow watch people!

[Endeavor]

As for jumpy springs; Has happened to us all in the beginning. Experience and better techniques will reduce the frequency. As a starter, if you suspect a jumpy spring you can put the movement inside a transparent plastic bag. If or when it jumps, it should be inside the bag, but check your hands and sleeves when you pull them out!

For me, best is to hold them down with a chisel-shaped pegwood and be "light" on the tweezers when handling. But there are many other ways to prevent them from flying ..... nonetheless, still some will do the escape-trick. I guess, in the beginning I spent more time underneath my desk, searching, than above

When a spring jumps, and you don't hear it landing, don't move and check your hair, eyebrows, hands, sleeves, your lap, desk, chair, trousers, socks, shoes etc. When you get up and move, check your shoe soles, the chair again, etc. Try to find it before you move too much around or leave the scene.

Magnet is a good idea, in the night a very strong narrow beam flash-light scanning close over the floor (looking for a reflection) or an empty bag in your vacuum cleaner may also help. Clean the floor before you start, good for your hobby and your wife will be happy too

These should be in every watch-repairers kit:

 

Suc6

 

 

 

Edited February 12, 2023 by Endeavor