Break out a hex calculator unless your good at doing hex math in your head.  I will teach you how the parameter file works.

Here is an example line from mine

0x00004000@0x0000A000(recovery),0x00082000@0x0000E000(backup),0x0003a000@0x00090000(cache)

So the first number before the @ is the size of the partition.  The number after the @ is the offset.
So in the above example recovery is 4000 long and starts at offset A000.  Now look at the next line which is backup.  To set backups offset properly you would add the size of recovery (4000) and add it to recovery's offset of A000

So A000+4000 = E000  As you can see that is the offset for backup.  Now if we look at the next one in the line Cache, it's offset is 90000.  We took the length of backup 82000 and added it to backups offset. E000+82000=90000 and that becomes cache's offset.  Make sense?

Now if you make a change to say recovery and make it larger, then you have to recalculate ALL the offsets that follow it.  You cant just do the next one in the line.  You have to adjust all offsets to the end of the paramter file.

By the way I noticed other rom parameter files and it appears the order can vary.  For instance the stock 10 G2 had system after recovery.  The T760 had system after Kpanic. I tried it both ways and the firmware still worked but just in case, I would leave them in the order your stock firmware came. That way if you have issues with your firmware working, you know it's not because you changed the order of things.

Hope that helps!

Bob