Posting to see if anyone on Slowtwitch uses SRAM Aero 500 TT shifters as I'm having problems with the front shifter. Unlike the rear shifter, it is not indexed so when I shift into the big ring I basically pull it up as much as I can. However I'm having problems keeping it in that position, as there seems to be tension pulling it back down. After a few minutes it will slip and my chain will be rubbing and eventually shifts back into the small chain ring. The front derailleur should be set up fine because I previously had SRAM Red 22 brifters and it worked flawlessly.

Anyone have tips on how to set it up properly since I couldn't find anything online expect the SRAM manual that I followed.

Thanks!