Ok, sorry if theres other threads like this, but from what I've seen, an updated thread seemed necessary. So heres the deal. I'm looking to get this setup (refer to 3 links below), but shipping from GC adds an extra 40 bucks to it. Thus, I've been checking out some canadian websites. The thing is, this bong has an 18.8 joint with a 14.4 adapter to a 14.4 bowl. The ashcatcher is also a 14.4, which i planned on fitting over the adapter. then I was going to buy another 14.4 bowl for it. http://www.grasscity.com/us_en/linear-pre-cooler-with-removable-diffuser-adapter-14-5.html http://www.grasscity.com/us_en/smoking-pipes/spare-parts/glass-bowls/g-spot-pure-bowl-cone-10308.html#.UbhrRvnOxAM http://www.grasscity.com/us_en/catalog/product/view/id/9438/s/blaze-glass-removable-percolator-bubble-tube-bong-gold-fumed/category/1143/#.UbjBj_nOxAM Heres the thing. In looking at this canadian website, I found a bunch of bongs with 18.8s using 14.5 bowlpieces. If I buy one of these, could I still use an 18.8 bowl? If I do go with my original one from GC, would the 14.5 ashcatcher still fit the 14.5 socket, and would the 14.5 bowl fit the 14.5 ashcatcher? I guess the real thing in question here is whether smaller joint sizes fit in larger joint sizes well, if its beneficial to use a bowl with a smaller joint size than the opening, and if there would be any problems connecting a bong with a 14.5 joint to a 14.5 ashcatcher and then to a 14.5 bowl.