converting RGBHV to RGBS -- anyone have 74HCT86's?

I've got a chinese converter(from ebay, recommended by a few here) that will take 15khz RGB video with composite sync and spit out VGA at ~32khz so a regular monitor can be used to display the signal. http://cgi.ebay.com/RGBS-CGA-EGA-YUV-VGA-converter-1-output-arcade-game-/25… The seller claims (and spec sheet does indeed look this way) that the RGBHV input must be 30khz+, but the RGBS input supports down to 14.5khz. I'm attempting to use this with my amiga, which sends out separate H and V SYNC signals but at 15.7khz. I found this schematic http://www.epanorama.net/circuits/vga2rgbs.html The simple VGA to RGB+CSYNC adapter TTL (which appears the same as the "Separate Sync to Composite Sync Adapter") I intend to build this, and see if this does the trick for me. This sound like a reasonable plan? Anyone happen to have a few 74HCT86's lying around? I can order them online but because they are under $0.50 a piece, and I'll likely have to pay a minimum order size fee plus S&H. Seems a waste for a dollar's worth of items. Thanks Keith in Pittsburgh, PA, USA