Well, it seems that my ignorance has cost me. I purchased a SLX m7000 which is only available as GS. This RD has a capacity of 41T. My cassette is 34/11, and my current cheapo cranks that are 48/39/28. ((34-11)=23 + (48-28)=20) = 43T Assuming this is correct, it means I need a SGS RD and will have to step up the XT 8000 SGS which has a capacity of 47T
Any thoughts/suggestions or do i finally have it correct?