Yes, first, WELCOME! ... is it okay if I just call you 'dung' for short ?

... second, I 'second' what RSM is saying. do a lot of searching and reading in the Rollie section and pay special attention to the posts about problematic and inacurate movements. After reading you will likely want to trade off some accuracy for reliability ... or maybe not. Educate yourself so you know exactly what you are buying before you buy it .