I don't but its simple to install. I used one of my old brake dust shields to install the wheel speed sensor. That was the most difficult part of the installation.
Just hold a cell phone in your hand with a free downloaded GPS speedo app and look at it while doing, say 50mph and see if the vapor reads 50. If not, stop and adjust it. Pretty simple.
Trail techs instructions tell you to measure the diameter of the tire and enter it in to set up the speedo but it's not accurate. Get a handheld GPS or use a GPS app on a smartphone to verify and tweak the setting until its correct.
I don't know if mine are show chrome or normal chrome but I bought em used from the classifieds section here and I've had em for over a year and they look perfect.
Probably leaking air on the right side reed gasket before you pulled em. 55 is too big for a pilot too. 52-50. Maybe even 48 depending on elevation and porting.