I've been fortunate to get a fair amount of riding in - even in the summer which isn't summer that we've been suffering in upstate NY. After 2-3 hours in the saddle my posterior craves a more comfortable relationship w/ the seat. It's not the firmness of the foam or shape of the saddle --- more like it's too hot on the leather. All right, I'll say it --- I'm sweating & it's ****** uncomfortable. Any suggestions as to what's the best cover w/out breaking the bank from any seat comfort gurus out there?