Good luck getting a response from Quark. I have sent numerous emails since I shipped out my burned esc back in June, to no avail. Might be better to keep what you have left until you hear that someone else has received contact with them.
“The modern astrophysical concept that ascribes the sun’s energy to thermonuclear reactions deep in the solar interior is contradicted by nearly every observable aspect of the sun.” —Ralph E. Juergens