I have recently purchased a set of Fruilmodel T-72 tracks and am having trouble. Does anyone know of anything I can use to clear out the track holes for the wire pins to go in. I checked for a drill bit that is 0.5mm but it is impossible to find. Any help in clearing out the holes would be appreciated.

Forget about the wire supplied and use staples instead. They are stronger and will push through most of the flash. The great thing is that they are all the same length and its easy to see they are pushed all the way through. Use a small set of pliars to hold and push with. A 5mm drill bit and pin vise makes this job 100% easier but if not available you could use a sewing needle to push through where the staple wont go.
Cut off the excess and tip with glue. I made lengths of 10 at a time and it workd brilliantly the first time. Leave a few unglued near the end in case you need to remove a link or two. Good luck!