Check the DR chain pusher limit screws are correct or the pusher plates sit into the tensioner wheel and stop it moving round nicely
Found that cleaning the tensioner, but then mine was caked in crud.
Rear sprocket wise I just use the SA ones on an SA hub. Do the Sram hubs use the same pattern. They are cheap enough.
Sram hubs use different sprockets 13/15 and a lot 1.1/8th chain so no compatible
@lynx started
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Check the DR chain pusher limit screws are correct or the pusher plates sit into the tensioner wheel and stop it moving round nicely