I recently purchased two of the Uberti Baby Rolling Block .22LR single-shot rifles. One has a broken mainspring end. I have e-mailed the company address ([email protected]) and have received no response. Are they actually in business, and if so, who in the US does their warranty work for them, or do they simply not support their pricey products ($425 is a bit spendy for a singleshot rifle!). I remain for now: both curious and a bit miffed!