Hi
I don't have a spare, but, take a look at this link for (I think) a good home made one.
http://www.iceinspace.com.au/63-597-0-0-1-0.html
I use a motor speed controller kit (Jaycay/Altronics) and about 12 pairs of paralleled 2ohm resistors. Velcros nicely into the area at the front of the corrector where the cap goes.
I bought a pile of the resistors cheaply from ebay. If you decide to do something similar, I would be happy to sell you left over resistors at cost plus postage.
Philip