PORT ST. LUCIE — John Maine just got finished with a scoreless but ugly two innings against Team Italy, and the Mets’ right-hander wasn’t happy with them — or himself — at all. “I just don’t feel good out there,” Maine said afterward. “I don’t feel comfortable. I’m trying to do something mechanically every pitch, and nothing’s working. I just feel terrible out there.”

Maine — who is coming off surgery last Sept. 1 to shave down a bone spur in his right shoulder — struggled from the outset today, walking the bases loaded in the first inning. He miraculously got out of trouble with a liner and a pair of strikeouts, but that didn’t make Maine feel much better about himself.

His frustration grew in the top of the second, when he allowed two singles and would have been touched for a run if not for a nice throw from left fielder Marlon Anderson that got Vinny Rottino at the plate.

“If it’s not one thing when I’m trying to do something on the mound, it’s the other,” Maine said. “I’m trying to get back to my normal form, but it’s been really hard for me this year. It’s not working yet.”

Maine, though, said he doesn’t think the problems will keep him from starting the regular season on time.

“Gradually, my arm’s feeling stronger every day, and that’s the only thing I’m worried about,” he said. “It’s a mechanics thing. I’m thinking way too much, and it’s a frustrating thing.”

Maine is notorious for being his own worst critic, so it seems unlikely that Jerry Manuel or Dan Warthen will agree with Maine’s downbeat assessment when we talk to them after the game. Keep in mind, there’s still an entire month to go before the season starts …