Circular saw base plate loose
I have an old Craftsman 7-1/4" circular saw (from 1998) that has a loose base plate & I was wondering if it could be tightened.
I'm building a farmhouse table & trying to get the end of the boards flush so I can attach the breadboards. The main center boards are already glued & screwed together.
I used a clamping saw guide/straight edge & made the cut, but the boards are somehow not flush. I'm assuming it's the loose baseplate + imperfect boards (slight bows, etc) + me reaching to finish the cut, causing the cut to be uneven (not 90°). Looking at the board ends, I can see where the cut is not smooth. I tried to apply even pressure, but no luck.
The top is pretty heavy & my table saw is just a 10" benchtop variant, so that's probably out of the question.
Any advice would be great. New circular saw, different method, etc..