well last friday did the brake job on the 50 chevy panel truck,made several ROAD TESTS, this week one over 20 miles, then wed. eve, start down the road go about a mile hit the brakes and THEY GO TO THE FLOOR!!!!!!!make it bake home without dents or dings,,,,,,,look under truck the drivers side rear wheel cyl. blew out???? took off wheel and drum and the clip off of pin they holds the brake shoes together had come off, checked the other side the same way????( but did not come out)they were new clips from OBSOLETE CHEV......put another new set of clips on last night ,re- bled brakes adjusted and went on a 30 mile round trip test ride!!!!!!yes i love ridding in the old panel....anyone had problem with clips coming off the pins in bottom of the brake shoes??????????/thanks for all answers
If there is no one else on the road it can actually be fun. 
As long as the pins are in good shape, the clips don't come off if you install them right. 