I am helping a friend out with upgrading his Affinity Tele. Got a set of Bootstrap pickups for it and went to swap them. Cannot get the old pickup leads through the tiny channel. They used a smaller gauge of wire for the leads and they just won't budge. How in h**l did they install them? Any handy dandy tips how to get these out without routing a channel? (new pickups have standard cloth pushback leads and the hole will have to be enlarged anyway).