Hello, I have been playing gut-like (Velvet and later Gerold Genssler's wound gut strings) for the past many years but recently switched to steel strings, mainly because of bowing issues and the cost of gut. I have now completely fallen for steel strings but have a major problem in very frequent string-breaking. I play with high action and use a mix of forceful pizz, arco and some preparations and at first thought that steel strings would have no trouble handling this. With Spircore Mittels, however, I have experienced strings breaking every second week and always right at the bridge. I have had a new bridge installed and double checked that the string slots are not too sharp. The breakage has happened on both my old and new bridge and all the strings tend to break. I recently switched to Spirocore Stark which seem to last almost a month before breaking. I have been in touch with Thomastik who analyzed my strings but found no production flaws. Do anybody experience the same? This is super frustrating as I cannot go back to softer tensions, now that I have fallen in love with the sound, volume and projection of high action and steel strings.