[T2] Is any "glue" needed for manifold to airbox junction tubes

[MUTS]

On daughter's 75 FI bus, I had to replace the manifold to  the left 
cylinder head when the mounting stud to the injector failed. The old 
manifold pulled right out of the old stiff junction tubes attached at 
the other end to the airbox, last replaced 14 yrs ago by a porsche 
repair shop when daughter was going to school in Savannah and started 
stalling at lights/ poor idling due to these leaking, making the intake 
air too lean.  I have a set of new ones-Does anyone seal these junction 
tubes with anything like a coat of gasket cement?  The alignment when 
dry fitted is not directly in line between manifold ends and the airbox 
tube extensions- off maybe an eight on an inch.  I assume the flex of 
the new tubes will bridge the difference.

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MUTS = Michael's Ultimate Thumb Saver
Oboe, English Horn, Clarinet, Soprano Sax support