Tried tubes and LOVED it, now what?

@freediver the kt88 tubes were replaced with el-34s by seller and I liked the result. My room is (overly) treated with acoustics foams and panels. Ive been having fun playing with diff power cords and ICs but so affraid on trying diff tubes, bias, rolling etc. I don’t mind keeping the amp for a bit longer.
@teo_audio   Who is here familiar with modding the cayin A88-T will h great result?

@freediver I will have to look up to understand what does rolling tubes mean. I heard about it but I was outside the “circle” so i kinda block it out. 
I will put Air Tight ATM-1 on my wish list. Someone posted it on YouTube of it mating with black bookshelf B&W and they sound outstanding. On the other hand, May I ask how’s Jadis’s liability and repair cost? Thanks all

Thanks Lil, I almost thought tube rolling was to hold on top of the tube and swirl them around their feet to get better connection... don’t laugh. 
Thanks all, best $1k I ever spent. 

Thank you @larryi and @trelja   Very informative. Enjoy listening