Just got the P4A fight stick! Any helpful tips?

So I just got my Persona 4 Arena Hori fight stick. It seems to be a great stick, with a fairly compact size and weight, and impressive button clickiness. However I realized that I'm having difficulties doing the shoryuken movements, specifically in Ultimate Marvel vs Capcom 3. For those wondering this stick is square gated. Do you guys have any tips to make it easier? Also should I start looking into making the stick octogated? If so is that a difficult process?