![Shimano 200GS rear derailleur keeps clicking. What do these screws do? I've turned them both ways but can't figure it out. : r/bikewrench Shimano 200GS rear derailleur keeps clicking. What do these screws do? I've turned them both ways but can't figure it out. : r/bikewrench](https://i.redd.it/sxed0pdxdha91.jpg)
Shimano 200GS rear derailleur keeps clicking. What do these screws do? I've turned them both ways but can't figure it out. : r/bikewrench
![The large chainring looks oblong when it's spinning. Is this expected? It's a simple Shimano 200GS off a 90's Trek 820. The rings are not warped when viewed from above. : r/bikewrench The large chainring looks oblong when it's spinning. Is this expected? It's a simple Shimano 200GS off a 90's Trek 820. The rings are not warped when viewed from above. : r/bikewrench](https://external-preview.redd.it/TnjOmgZxehz-w1m1u8h9CCny-HUgZC-I_zc_urzYFME.png?format=pjpg&auto=webp&s=b07862c75e1121a3b353562e2a429b70232e9228)
The large chainring looks oblong when it's spinning. Is this expected? It's a simple Shimano 200GS off a 90's Trek 820. The rings are not warped when viewed from above. : r/bikewrench
![Will these old school shimano ST-M020 200GS shifters (from 1992?) work with these suntour XCE derailleurs (from 1991?) ? Everything is 3x7 : r/bikewrench Will these old school shimano ST-M020 200GS shifters (from 1992?) work with these suntour XCE derailleurs (from 1991?) ? Everything is 3x7 : r/bikewrench](https://i.redd.it/n465gc9ul3b61.jpg)