You can get bigger tips for the Harbor Freight HVLP guns.. The HF part number for the 2.2 should be 25942....
and I know the 'professional'
comes with a 1.8 tip..
You can find coupons to buy the guns for next to nothing.. 10 bucks for the 'cheap one' and 30 bucks or so for the 'pro' if you look hard enough..
I have also heard of people drilling the tips out..
I use these guns quite a bit for shooting primer and small projects... They work well enough.. but are throw away tools for sure..
sometimes quality equipment will pay for itself pretty fast..