Plastic clunk tank plumbed just as the instructions that come with it shows, vent positioned in the top front inside corner on muffler pressure. All synthetic fuel, (no Castor at all) plus a means to adjust the intake choke area. You can't use the needle valve to adjust speed and why the choke area needs to be adjustable.
The reasoning and results behind this advice has been posted many times, you will learn allot by reading past posts in this section.