Buy this stuff....
http://cgi.ebay.com/ebaymotors/SEM-F...spagenameZWD1V
This is the stuff to use.
It may seem expensive, but 10oz's is exactly how much you need.
No less.... so buy two...
actually, Now that I think about it...
Perhaps 20 oz's may be needed.
(I got one or two of those, and about 6-8 of the smaller, 1 oz tiny-tubes)