Wow, that's great info Jake, thanks for posting. I sent two master cylinders and a set wheel cylinders to Karp's back in November and still haven't heard back from them yet.

Will be interesting to see how the White Post sage works out.

I used them for odd ball wheel cylinders in my 49 Studebaker dump truck. You cannot buy new ones anywhere. They had to sleeve from each end and the front and back of the wheel cyl are different sizes.

So far so good.

I think it is important to note that NAPA is just doing a standard rebuild through Cardone - a mass parts house rebuilder. These pieces are not getting the full monty treatment (stainless sleeves, painting, etc.) that you'd get when you use one of the excellent specialty rebuilders mentioned earlier - but you're also not paying for it either.....for what I'm doing I thought it was a better option.

Sent my 69 Master to White Post last summer and when it came back 6 weeks later it did leak a little. Sent it back with no issues, had a tear in one of the seals. So far, everything is good with no leaks. Reason it took so long like everything else these days, is Covid-19.

Some time back I sent two '67 Chevelle SA code 346 masters to White Post to sleeve for future use.
A year and a half ago installed and bled the first, pedal bleeds-by to floor. Used master works good. Ordered two rebuild kits from Inline Tube, first kit installed, no better. Second kit installed, same.

Ordered two DORMAN kits (remember, I have two White Post masters) from RockAuto (label attached), first kit installed, problem solved!

More recently, different car, installed the second White Post master as delivered, pedal bleeds-by to floor. Installed the second DORMAN kit, problem solved!

So, it wasn't a sleeve problem, rather the rebuild parts kits. Now I have four brand new master kits on the bench that don't work!

Related issue, driver's side, four piston caliper on second car, three (3) times to and from LoneStar, leaked in a different place each time. Last time back, no leaks, all good now.

Bill W

Has anybody sent their MC out to Mike Gibbons brake restoration