Why such a huge overbet on the flop? Now when anyone shoves you can't get away 'cause its just $10 more in to a $45 pot. Board is already drawy with the 2 diamonds, so you're either way behind (AAxx) or somewhat ahead against a decent range of hands (KJxx with 2d, K10xx with 2d, various 2 pairs, etc.). I think its OK to grip it 'n rip it with second set with this kind of PF action, but the 2x+ flop overbet looks enough like a steal to invite drawing hands that will look you up, or just plain chase away anyone you could play for value.