I've inherited a C&H 4060A (and even managed to find the manual for it online), which is a lovely, sturdy thing, but is pretty old and a bit battered. The main issues I have with it are that all the measuring guides (apart from, weirdly, the top stop guide) are in inches, and the first inch and a half of the vertical guide, and the last couple of inches of the left hand horizontal guide (if that's what these bits are called) are missing, photo below.

What I'm wondering is whether worth persevering with this machine, maybe try and replace the guides with ones that show inches/centimeters? Or is it really dated and should be replaced? As I'm only just starting out I don't want to lay out a lot of money on a swanky new one just yet, but could afford a few hunderd quid if it's going to save hassle in the short term. Ideally I'd like a CMC but can't justify the expense just yet.
Any advice gratefully received!