After using many different brands etc i have found the CS 47 Echlins are the best overall.
After doing many of these units over the last few years i have found that i can set up the distributor , run it on a machine for a few minutes and see the adjustment change in what would be only a few road miles...
The fix is to soak the cs47 contacts in marvel mystry oil and then just clean lightly with brake clean and install.
The adjustment stays for a much longer time etc.
I figure the point rubbing block absorbs some of the lube and gradually gives it up.
A " works for me " tip .....
