Good point, I thought about doing this, but it just transfer the program memory overhead into the RAM right as it will mean creating another whole 80 byte array, right? Also I will have to fill OffsetArray with a series of 80 constants which will go right into program memory.

I'm using a 16F648A with 256B of RAM and the compiler cannot fit two such large arrays into contiguous banks right now. Granted that I probably have some optimizations left on the program, I will not be able to free up much RAM space though...