voltage divider to bias JFETs?

[comfortably_numb]

I had an idea recently when looking at jfet booster schematics.  Every jfet gainstage I've come across is biased through the drain at 4.5 volts.  This is usually done with a 100k trimpot, but I have just been hooking up a 100k pot, tuning, measuring, and then replacing that pot with a fixed resistor.  That saves a little on parts and space, but certainly not on time. 

Then it occurred to me, why not bias them with a simple voltage divider?  Create a voltage reference at the junction of two 1M resistors between 9V+ and ground, and use it to bias all of your gain stage JFETs. 

In a single tranny booster this would mean an additional resistor, but time saved, and certainly cheaper than a trimpot.  In anything more than one tranny you're at least breaking even, and after two, you're actually saving parts.

This seems so obvious that I'm sure it won't work.  Any feedback?

Thanks,
Joey

[aron]

http://www.diystompboxes.com/smfforum/index.php?topic=32197.0

and

http://www.diystompboxes.com/smfforum/index.php?topic=69631.msg559085#msg559085