Righty/Lefty Doubles problems

Hi,

I'm a Righty and my doubles partner is a Lefty - an ideal combination I understand. We have one obvious vulnerability and we're not sure how to overcome it. When I'm serving I tend to serve a short/long forehand and immediately move to the left and to the rear, however our opponents have discovered that if they attack my backhand corner immediately after my serve I'm invariably in the way and considerably reduce the chance of my partner making a good return, if at all.

I'm thinking I should maybe modify my forehand serve to prevent the receiver playing down the line? In the meantime we've fudged a plan whereby I serve backhand and move off to the right and circle back in behind my partner, but this feels wrong and negates the Lefty/Righty advantage. 

Any tips please?

Thanks.