The front end on my 75/5 is bouncing very bad and front end dive is excessive. I put new 10 wt. oil in the forks, replaced the springs with the thick progressive ones, and installed new rear shocks. Also replaced the entire fork assembly. The springs have enough of a preload so they had to be compressed when screwing in the top caps.
I'm thinking of adding another 10cc fork oil just to see what will happen.
If that doesn't work, maybe replace the main stem, bearings and triple clamps with an entire extra unit I have. Outside of that, the Haynes manual said look out for a possible cracked frame. The bike currently feels dangerous to ride.
Can anyone please help?