questions on the santana overdrive unit

[glbft1]

Greetings all,
I have a santana overdrive that works great but leaks like crazy, can you get gaskets for these? is there a vent fitting that could be blocked if so where is it? has anybody had the same issues with these? If I can,t get gaskets for these I will remove it is that a hard process?
Thanks
Greg

[scott]

don't know about santanas but my fairey just has a small, really small hole drill through the inspection plate that's on top of the unit. gaskets can always be made, seals are a bit tricky