Soo happy with my purchase.  Fantastic product, I purchased the V1 shifter over a year ago now and it has not once needed to be adjusted or tightened and god does it feel good.  Jinx Shifters have a level of customer service that is second to none, if you have any questions before or after the sale they are always happy to help.  Couldn't recommend this product any more if I tried - Tyronne De Silva