no weak points that i know of. i've raced an original hurricane 600, CBR F2, and F3. They are capable track bikes and comfortable street bikes. Only thing about the F2 is the automatic cam chain tensioner. I replaced those with a manual from an F3.
with that many miles, I would check and most likely replace the steering head bearings, rebuild the front forks, not sure if the rear shock is serviceable (never had a stock rear shock), and clean out the carbs. also, recheck the valve clearance.