Hello, I'm trying to use the markup feature in Quickbooks desktop on estimates.  I've been doing a separate excel sheet for all of my quotes with markup in it but I'm QB can eliminate that extra step.  I setup a couple of different markup levels but one of the things I noticed is that if I modify the item price and then add a markup, it applies the markup, plus the percentage required to get the price back to the original price for the item. I'll give an example.

I have a generic non-inventory part called "Materials" that I use when quoting out jobs for little misc. things like nuts, bolts, patch cables, etc...  That item when it was originally created had a value of $1,065.00.  But its different for every job we quote, so I'll select that item, and then change the description and price for the job we're quoting.  For example if the job needs $500 of materials (cost to us) then I'll select the materials item, and change $1,065.00 to $500.00.  When I go to select the markup percentage though it applies the markup percentage, plus whatever percentage is required for the base price to go back to $1,000.00.  So if I wanted to a 10% markup on $500 materials charge, then instead of marking it up 10% it marks it up 134.3%. 

Is there any way to fix this?