Is it a hard line? If so, you can get replacement tubing. It does not cost very much. The silicone thing is a little too half-assed IMO... But, "to each, his own".

If it is a hard line, and it is "only" vacuum related, maybe just trim the hard line and stick a piece of vacuum tubing between the 2 (like a splice).

__________________
AJ

1985 300D (SOLD)