Doing my winter maintenance on my 63 TR4 CT 12972. I noticed some play in the steering. The inners and outers seem tight, but I noticed some play in the steering pinion. The play is up and down, not side to side. I see there is a bushing available, is this difficult to replace? My TR has the earlier "ear" style rack mount. Since I am running 6" rims and modern tires I am thinking of reinforcing these as I have heard they flex. Any pictures out there of how to do?