I recently picked up a fretless samick 4 string for $120. Should've gotten it cheaper but the seller was 17 and he met me at my rehearsal area so I could play it on my rig so I didn't haggle too much. Anyways, I noticed a few things electronically that need to be taken care of. Scratchy pots, fuzzy pups, and an input jack that decides when its going to work. I've decided on the Benny pj set for pups and that takes care of the electronics as a whole for about 175. I was thinking about changing the bridge and the nut as well. My question is, am I going the right route? Wasting money/time? Any advice on certain bridges to stay away from?