Hi Len,

I have been using DUBRO fuel valves for years without any problems, (other than misplacing the connector, but then I'm a forgetful old fart). I currently have them fitted to two models.

Using an inverted OS108 with the fuel valve on the lower third of the cowl there is no discernible difference to one mounted at needle valve level on a side mounted ST75, both work fine. I do change the tubing each seson though, (cheap deadstick insurance).

Hope this helps.

Cheers,

Colin