I absolutely love the Vortex reticles, EBR-2B, EBR-2C, XLR. My problem is that I'm using an airgun where most scopes suitably paralex down to 10-15 yards and the Vortex scopes with the aforementioned reticles have a minimum paralex of 50 yards. Does anyone know of or had experience with recalibrating the front lens that corresponds with the paralex in order to shorten the minimum paralex distance? I realise this is a no no and could void the warranty of a scope, but would love one of these scopes with those particular reticles that I could also use at a shorter distance. Thank you to anyone that could point me in the right direction.