The timney is a pain in the ass on the mk11. The tangers aren't bad at all. You need to remove quite a bit of steel on the 3 position safety to get it functioning.
Hmmm... I've installed Timneys in both MKIIs and tang safety M77s and thought just the opposite. Yes, you need to remove material on the 3 position safety, but it doesn't take that long and it's a simple process with a file and maybe 10 min of fitting. There's no way around the fact that some fitting is required due to the Ruger safety design and the fact it's a cast part with a fair amount of dimensional variation. The Timney trigger for the tang safety has a safety transfer bar that protrudes out the left side of the trigger further than the stock Ruger trigger, requiring a fairly significant amount of material be removed from the left side of the tang inletting in the stock to provide clearance.
