radiator clearance

[Richard <riddon@btinternet.com>]

I have recently installed my radiator in the ducting and have just completed
the fitting of the lower engine cowl.  I have a gap of around 1inch between
the lower edge of the rad & the cowl. Should I endeavour to block this off
to encourage as much airflow as possible through the rad or leave a gap so
that some cool air gets directly to the oil cooler.  If the answer is block
it off, what to use?

Happy new Christmas!!

Richard Iddon. G-RIXS