Has anyone ever seen an aftermarket system for drive chain tension? I think the stock system is the WORST design I have ever seen!! I have looked at factory diagrams so I know it is set up right but I keep finding the right side rotating loose after riding? I have been having to use vice grips on both tensioners to hold them in place after adjusting the chain, prior to re-tightening the axle nut? The right side especially keeps trying to rotate loose every time I try to tighten the nut! I have even tried oil between axle but and washer to try to keep it from rotating.... I just got back from Colorado where I did tighten it a couple times during my week there, and once again found the rear wheel cocked and right tensioner rotated loose.... Right side.. Left side..