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Having just finished Mark Lovick's excellent "Maintenance Servicing" course, I'm now reassembling a Poljot 2614.2H movement. Unlike the the Unitas 6498 in the course, this movement has a friction point which I don't know how to releate to. It's certainly not easy to formulate a correct question, so I'll back it up with a couple of pictures. Should any oil be applied to the friction point between the jewel (on the inner/intermediate bridge) and the fourth wheel pinion, and if so what kind of oil?

I’d be surprised, but very happy, if anyone has the knowledge to help me out with the following. I’ve bought a Russian watch having a Poljot 2614.2H movement (Cornavin Dolphin) on eBay which I’m now servicing. My problem is that I need a new mainspring for it (or barrel complete) but I’m unable to find anyone who can supply it. I found some other Poljot mainsprings on eBay and CousinsUK.com, but non for the 2614.2H. For example, on eBay I’ve found a mainspring for a 2609/2614B, and on CousinsUK.com I’ve found a barrel complete for the 2609. However, I have no idea whether those would be compatible with the 2614.2H or not?! Here are the measurements of the mainspring I’m looking for: Height: 1.15mm Thickness: 0.12mm Length: 330mm (approx.) Inner Barrel Diameter: 10.48mm I should also mention that it needs a “DB = Special Bridle” as specified by the Generale Ressorts catalogue on CousinsUK.com, which I’ve also browsed but with no luck. Below are some pictures of the barrel and mainspring I’m looking for.