Super touchy brakes

[KrisM98502]

Finally got them transmission leak fixed.. Boy what a butch she was! My question is about the brake system. My brakes are way super touchy, were thinking its the power assist, does anyone have any insight on this? Mines a 98 4wd with a new 3in lift!!
Thanks in advance!

[VStar650CL]

Could be a bad booster. Could also be a bad proportioning valve (load sensing valve on most Nissan trucks). If that's blocked it will divert all the pressure to the fronts and make for touchy brakes at low speed and poor braking at high speed. On a ride that old, it could also be bad flex lines. The rubber can delaminate and act like an ersatz check valve, pre-loading pressure in one or more of the pistons.