I ordered a full low gain retube kit for my Traynor YBA-200 about 4 months ago. About a month or so ago one of the power tubes failed during a gig and in the end messed up my amp. (not a problem since it's under warranty) Well yesterday I contacted Eurotubes just to see if it would be okay to buy just one power tube to replace the one that went bad. Bob @ Eurotubes responded and looked up my previous order and is going to send me a new power tube that matches up to my other power tubes for a discounted price and no shipping fees since they should have lasted longer. I was going to buy it regardless and I realize tubes are something that are normally not warrantied so it was great to hear the good news! I love great customer service especially when it is offered to you without asking!