Hi PJ welcome to USMB.
You should be able to adjust the clutch cable since its a non-hydraulic clutch. The adjustment should be right over the bellhousing (Under the spare tire if its in there) you can adjust how much slack is in it to make it more responsive, you would also adjust it when the clutch disc gets worn to keep the clutch right there rather then letting it out so far.
As for the rattle, I'm not sure, But I am sure GD will pop in and give his word on the whole deal.
The Loyale/GL (EA82 engine) is a good engine and won't let you down as long as you do a little bit of preventative maintenance. Keep coolant and oil in it and she'll be happy, and check the timing belts from time to time.
Cheers!
-Tom