Tilton Hydraulic Masters worth rebuilding?

[DanEC]

Pulled my brake master cover and the 3/4 inch one is leaking from the boot so I guess the seals are shot. This is the second 3/4 inch one I've had fail. The clutch master was bad before I even got the car running and this one is shot with less than 50 miles. Not too impressed with Tilton.

I took the clutch master apart (which I replaced with a 7/8 one) and found some scuffing scratches in the top of the bore apparently from the piston lands hitting it. I got them out using 600 and 1000 grit sandpaper wrapped around a deep socket. I will probably hit it with some 1500 and also polish the lands on the piston.

Looking for those who have rebuilt these things in the past and if you were successfull or should I just spring for a new one? I would like to rebuild so I don't have a growing collection of these things laying around. I suspect there must be something about the 3/4 inch ones - maybe the piston/bore clearances are a little too tight and slight eccentric loading on the push rod causes the piston lands to scrape.