Did you use the original shaft? Not,the way to,go. The telescope is for safety in an accident, not for,changing length.

When all the right parts are used put the coupler on the steering box first, then raise the column to the dash mounting points and barely snug the bolts, align the column and shaft in the engine compartment at the end on the top tube and tighten bolts. Having a helper is easier. Last are the 4 firewall plate bolts.