I had a faulty IR on Mamba - Sammie replaced it straight away.
I had a floppy lens cover (ooh er missus ) Sammie replaced it straight away.
Straight forward & promptly sorted.

Good customer service, good product (which as Parabuteo says - keeps being developed & improved & fair pricing are the is the reason I now have 2 x 10x44, 3-12x44 Viper & 4-16x50 Mamba & an MTC LRF.

ATB Simon