Thrust Plate to Pin and Spring Conversion

[chadillaca]

My 99 Wrangler had a thrust plate design. I purchased a Clegg stroker kit which only has the pin and spring option. My timing cover does have the nipple. My question is, what holds this thing from walking backward besides the cam chain tension and the pin/spring. Will the cam gear rub against the block? I can push the cam gear back until it hits the block with minimal force. What stops it from moving rearward? I don't have my rear cam freeze plug in yet, but also couldn't it rub on that too? Or am I overthinking it and since there is no real reward force, the timing chain will pretty much keep it in place all by itself (well with the pin and spring for the forward motion)?