I read a post on this site awhile back regarding the spider wobble and one person commented saying something along these lines, "we think of them as our short-bus snakes", I thought that was kinda funny had started using it lol. I have several snakes with the spider gene and all of them have varying degrees of the 'wobble'. Their quality of life does not seem to be impacted in anyway to include one of my newest hold backs (banana spider that hatched in Aug) who seems to have it the worst (he gets his 'spidey dance' on allll the time). In my limited experience the condition does not worsen with age, only with excitement/stimulation). I had not heard that the spider gene causes a more pronounced wobble than the ivory or woma snakes, will have to look into that.