springer install ?

Hi all: I am installing a springer on a bike, and I have run into a snag...the stem on the fork is several inches longer than the stem on the frame. The threads go down far enough to cut off the fork stem and still install it properly, but I can't figure out how to move the upper spring bracket down far enough. I am sure all of these terms are wrong, and as I am the last person on earth that doesn't have a camera on my cell I can't post a pic...this is a standard springer (what would have been called a girder on a motorcycle when I was younger) with a horizontal spring at the top. How can I slide that upper bracket down the stem far enough to mount this? Thanks.

Ride safe

Gonzo

RB: Thanx for the advice. This bike is or my biz partner, and what we are thinking about is just adding a pc. of pipe with the right inside & outside diameter to use as a spacer. There is about 3 inches of space. What I want to do is split the difference, & add a pipe/spcer to both the top & bottom. This will extend the fork by about an inch and a half, but Pat's a pretty big guy, so I don't see a problem. Thanx again for the advice.

Ride safe!!

Gonzo