Hermco Bracket with 30" Motor

[kmoose]

Will be mounting mine on my 23 and it looks like the 26" mounting height might be in conflict with my raised floor. Anyone have the Hermco twin with a 30 inch motor? Suzuki 300? I'm thinking I can raise the bracket 1.25 inches and clear the floor. Other than slightly affecting displacement of the bracket, are there any other considerations? I think I have heard of a person having to mount a jack plate on an installation but not sure why. I absolutely don't want to mess this up so I'm trying to find someone who has already climbed this hill.