Very interesting bike, my first real bike was a
Viscount Aerospace Pro.
First question what kind of Fork does it have? if it is a
solid cast Alu fork you may have the original "death fork"
which should be replaced. If it is a lugged fork you're fine. Yes Lambert did build alot of its own bits, one of
the few companies that did. Very innovative but be careful of the Bottom Bracket, has a pressed in set of bearings which will be rather difficult to find replacements for.
Nice Bike, I wish I still had mine, death fork and all.
Marty