It's kind of weird that the same triangle shows up on a number of their decks... it makes me wonder if it's a last-ditch attempt of the manufacturer to deflect rocks or objects coming out of the deck.... if it is and you remove it and something weird happens if somebody gets hit with a stone or something they could shun any participation in a legal fight. If I was you I would certainly go back to the dealer and see if he's got any advice on baffle adjustment.... and don't be so sure they aren't already high lift blades under the deck I was a little surprised on my brand new fast-trak to find out that's what it came with.