never seen a holes in the lug itself seen them hundreds of times on the tubing though, for which i suspect as you said is for draining any moisture, having said that any moister inside wont escape from that hole as its near the top, so i couldnt see much harm from filling it in.
never seen a holes in the lug itself seen them hundreds of times on the tubing though, for which i suspect as you said is for draining any moisture, having said that any moister inside wont escape from that hole as its near the top, so i couldnt see much harm from filling it in.