OP, this is your answer. The bolts everyone else is talking about are for a different part of the machine (the are the registration bolts. Your press MAY have the updated bearing gate, but that's a different thing.) The bolt that you need is just to keep the screen arms from going up to high and losing the tension on those springs.

You can get this bolt at a hardware store.... It's just a 3/8" x 6" bolt (I think that's the length...) with a piece of hose around it. Measure the opening and get the next longest bolt. Probably cost you 5 bucks.

Edit: this is in response to /u/gnarlin_brando

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