Can I use a Magnum pan gasket on a Magnum engine with a LA pan.

I had issues with mine sealing on the back, the Magnum seal wanted to sit right where the stamped lip goes around the rear of the pan so I couldn't get it to seal right and now have a constant small oil leak. When I install my Kevko pan I might just cut the front and rear parts off the Magnum seal and put 360 LA seals on the front and back instead. I don't think the front part will be reusable anyway because of the RTV I put on there to seal up the corners. Just something to watch out for...