mikeymustard":290ofchm said:Keep it as it is!
Also, in case of another situation with a uniglide, only 7 speeds are hens' teeth, the 6 speeds aren't so rare, and the smallest cog is the one that holds it on so just get a 6 speed and swap the smallest cogs over.
Thanks for your advice and suggestion,Mikey. I will keep the bike all original as you suggest,which I feel more comfortable about anyway!
Mark.