Boosting volume on ROSS Flanger.

[Burstbucker]

I have an old ROSS Flanger, I love the sound of this thing but it seems to lower the volume when it's on.  This really sucks!

I was wondering if somebody here can give some advice on boosting the output a little bit?   I'm sorry but I don't have a schematic to help things along either.  8^(

I'd sure appreciate some help with this problem because the tone of this Flanger is great but the volume drop kind of makes it unuseable.

Thanks!