Well done! :) Those bikes are worth the trouble, still top quality compared to others currently on the market.
Also had an RD350LC - less prone to hiccups!
Had many 50's while at school back then . . . RZ50, DT50, MB - 5, MT - 5, MBX 50, MTX 50, Ar 50 / 80, Suzuki RGF50 / TS50w/c - had many...