Echoing David's advice...
Send the mags out for overhaul every 500 hours... Not just set the
points and dab lube on the cam... An actual overhaul, and both you and
Atlas will start up in cold weather...
And, a dry vacuum pump is a ticking time bomb past 500 hours... If you
actually fly IMC and depend on the pump to work every time all the
time, now is the time to sell it on ebay and buy a new one...

denny