Transmission gears

I’m doing some work on a new to me 1975 250 engine 2042 and I was wondering if you guys think I should replace a few of the transmission gears. I’m new to the vintage scene and while I don’t want to skimp on a proper rebuild, I also don’t want to spend copious amounts of money if I don’t need to. Anyway, if you guys could take a look and offer up an opinion, I would greatly appreciate it.

Forsure I would replace this one .... is that the second gear on the lay shaft.

I would replace those with the badly rounded over edges on the shift dogs and windows but also find out why they were not fully engaged. You can see by the wear marks on the window the shift dog or lug was not engaged very deep into the window. Possibly badly worn or bent shift fork or shim out of place.

Marty