ETS on Smooth Surfaces

[laclede]

I've been very pleased with the results using ETS on all the trim on my truck except that I seem to be having some trouble when using it on trim having hard smooth surfaces. For example, the large chrome plated plastic inserts on the grill of the new Ford Super Duty trucks. The product goes on smoothly with no issues but is difficult to remove/buff off cleanly. Put another way, it seems to want to streak and be hard to remove. Once I do get it buffed off though it really comes out great. Following the instructions, it says for hard smooth surfaces to buff dry after application. My question is if I should be letting the product dry or haze for some time (like their DGPS) before buffing off instead of buffing off immediately like I have been doing.
I'm very impressed with all the WG products I've used thus far and as a result I am now buying in larger quanitities and using them exclusively. I think I may need to alter my application with the ETS though.
Thanks for any help or advice.