I have had a good condition 90 with 36" bar. I run it maybe 2 times a year. Am 66 n the saw is too heavy for me. Any idea on a good replace ment ? I have a husky 55 which is good but keep the 90 in case one of my big red oaks (70-80 ft) comes down n blocks the driveway. maybe be willn to do a trade thanks ( doc found arthritus in my spine n have to be careful)