Need some ideas on correcting weak brake complaint. I have an Fox Sundowner that I installed (years ago) an Azusa Engineering model 2208 4 1/2 inch brake plate & drum. Very Weak brake action then & now. I have the brake arm positioned at a 90 degree angle & have adjusted out all the slack so that I have very firm lever pressure when pulled. Any suggestions? This is a recent fix up after the bike setting for 15 years.....with the predator engine, this thing runs like a scalded dog. I just cann't stop it!