A while ago when I was getting acrid smells in the cabin, I laid bike inner tube on the engine/skittle bay ridge and then pushed the rubber back on for a tighter fit.
The heat shield I've cable ties a while ago.
I bought a packet of Fir tree plugs, but there is still a tad of play, so wouldn't mind knowing what you used there. I meant to take it all off and go for a drive.
Today, I tightened a cable that I'd done before but was still knocking at the bottom of that skittle drain, just put your hand down there and possibly feel a loose cable. Not that it made any difference, so I might release it in case it's supposed to be loose.
Then I saw that there was a drain pipe or overflow hanging down all free to whack the sub frame. Cable tied, no difference.
I didn't get to go on my test road tonight, but I have a feeling it's quieter when wet.
GT 3.2 V6 - Q2, KONI FSD & EIBACH PROKIT, GTA REMAP, MICHELLIN PS3's, BMC CDA
159 SW 2.4JTDM TI - ALFATUNED, WIZARD BACK BOXES, KW V3 COILOVERS, NOKIAN WR A3/MICHELLIN PS3, PCA DYNAMICS ALIGNMENT.