Ryan - In most cases I've had good luck with using an aggressive double sided tape, wrapped around the end of either smooth cut sprue, or skewer stick ends. If the clear parts are big enough, then using two of the sprue's gives even more of a grip and maneuverability while holding in place. The wider the surface of adhesive you can manage, the better. Tenax sets up very quickly, so the bit can be released soon.
Patience and continued attempts usually pays off for me. Hope you get them in place OK.
Patrick