Help with mpg and ilowpass

Attached is a working copy of my custom_mpg_test.hal

I would like to put the ilowpass filter in it but not using the mux so no selector switch needed as I will set the scale and gain for each axis.

could anybody give me an example say just on the X axis please.

Ok after many hours of work I might have cracked this attached:

Would someone care to look over it for me to see if I have it correct. It appears to work but not sure as I don't have a 100 mpg only a 600 p/rev encoder. looking at the ilowpass in- &- out pins they both change together.