When MORE space is BAD!

So I have had the Treo 680 for a little while now and have discovered an unexpected issue.
My main tool in troubleshooting crashes is locking things in memory. Well when I had most of my apps running their parts off of the SD card the files IN memory were smaller. This allowed me to lock more troublesome and conflicting apps. However NOW that I have almost everything running in memory and extra add on features for apps like Agendus also installed that app size in main memory is MUCH larger. For example Agendus has changed from about 1MB to almost 3MB.
The reason this is such a problem is the Rlock only lets you lock up to 4MB with of apps in memory. So nowI have Agendus, Lightwav, and my small hobbyist apps locked and am out of room to lock more apps. This is definitely an unforeseen problem with actually having MORE memory. I have been looking at how I store my apps and their data and seeing if I can pair down even though it's not necessary for the sake of free RAM.