So I'm really liking the RB Blast. Very nice engine. Raced it yesterday at Hobby Hut and it was chilly out to say the least but I never had to touch the needles. No flame outs, no fussy idle and more power than I could say grace over. Big power but extremely manageable. Still has metal pinch and I kept it a little rich with great fuel mileage. We ran a 20 min main and I pitted just after 10 min with this much fuel left.