Those are very nice BBQ arms, from the pictures posted I can't see how any of them would void a warranty on your frame. The only thing that I know of that would void a warranty is if you welded on a receiver to carry thinks like bikes. I like that bolt on receiver. You can always take it off with 4 nuts. As far as the sewer post holder that would not void a warranty also IMO. Plus I also came from a region that calls the strap your husband wants to use Plumbers strap, mostly used for wrapping W/H. so they don't fall over in an earthquake. Infact it is required by code, can you guess what State I used to be from yet... Note: Lippard is afraid of people welding on those cheap paper thin frames, you could weaken the whole frame if you do not know what you are doing. But that is just my opinion. Lippert has welded on my frame twice, so if anything happens they have bought a frame not me...Bolt on stuff is fine..