If your looking for a cheap repower for your BCS or Grillo, check out this Subaru Robin 9 HP on Ebay - Robin-Subaru Engine 9 HP - Free Shipping | eBay . I picked one up for my 735 (Briggs Vanguard died and parts would have been almost as much to fix it as I paid for a brand new engine) and it...
That really is disappointing to hear about your dealer Cent PA, usually most owners and especially dealers love to promote these little tractors for all they are capable of. I can't imagine why they won't accomidate a request for a trial - most equipment dealers are more than happy to do one...