Ideas for turning drawn deep frames into mediums?

[twb]

I have several drawn out deep frames on plastic foundation.  I have grooved top bar and grooved bottom bars so simply cutting the foundation to size would eliminate the tapered edge that fits into the frame's groove.  Any groovey :lol: ideas to solve this one?

[dlmarti]

I'm about to encounter this problem in a few days.
My plan is to cut the frames down, with the foundation in place (jig saw).

[twb]

My plan is to cut the frames down, with the foundation in place (jig saw).

And then how do you plan to add the grooved bottom stick? 

[metzelplex]

   Couldn't you run the bottom bar through a table saw and make the groove wider so that it's the same thickness as the plastic foundation before the taper then scrape back the wax about 1/4 of an inch on the bottom so that it fits into the bottom bar then just nail the bottom bar to the end bars.    metzelplex

[Michael Bush]

I cut all mine down, but not with foundation in them.  I then cut the end bars off of the bottom bar and made a butt joint with the bottom bar inside of the end bars:
http://www.bushfarms.com/beeseightframemedium.htm#cutdownframes