Bought a guru evolo-r this year with sram red everything. Love the bike. Soon after I got it I started having front shifting problems. Brought it in for service, twist thus, turn that, all is well, for a few miles. Then trouble strays again. Bring it back in and we end up swapping out the titanium cage FD for the new steel cage FD. Have that put in, and for various reasons also have the cranks switched to compact. Ride out, trouble. Won't shift from small to big rings. Bring it back in, adjust it, get the bike back and ride for a handful of miles, trouble starts again.

This weekend I was out of town and trouble started again on a warmup ride. Being out of town I founda recommended shop and they did their thing the bike worked great for about 70 miles of a 100 mile hammer fest. Then trouble started again. I couldn't shift from the small to big ring. If I tried and left the FD in the big ring position it would maybe eventually jump. Started getting horrible chain rub and lost the chain twice on hills.

Anyone have a diagnosis? Similar exerience? SRAM red everything with gore ride on cables.

Thanks in advance!!
Had anyone