Hello everyone, I apologize in advance if this post is in the wrong spot, still learning. I have two td9's one with the track master pin that has backed out about an inch and the rock guard did a number on it. I got the pin back in and got it parked but it is chewed up pretty bad. Question is are these pins available and if not is putting a small weld on the face of the pin to the track chain even worth trying? Second is I believe the flapper valves are not fully closing in the intake manifold, plan is to remove and clean the manifold, when I pull the compression release it does not fully close the valves and I reach in the back side of manifold and push up on the v shaped part of lineage to close, that has been working for awhile but not last weekend, carb is clean, fresh gas, good spark, if I hold my hand over air intake hole it will try to start but I believe there is not enough fuel being pulled up through the carb. Any advice on either would be appreciated, both machines are early 40's if that helos