Thanks alot guys for the responses, I mowed er last night, ran surprisingly well. I think I will get the belt changed and giver another tune job, I changed the oil and plug and filter last fall when I put it away for the winter.
Someone told me the belts are good till they break however I tend to disagree.
The heating up makes sense as she mows great in med to low gear till about half way through, then near the end I have to giver full throttle and ride er in high to finish, I too have a sloped back yard a bit hilly in spots, I find letting it idle with my foot on the break every so often brings er back to life near the end of the mow..
