Cool, to hear from some decent player. What time did you play? Around 2002?
Since I was a 2k player at the time, let me assure you, that the top dudes at the time (Koven, Sheriff for example) were already so called pro gamers who got payed/sponsored and they were exceptionally good.
The true story is, that many folks above 2k+ did what was called "points trading" back then. Koven once stated, that they got payed according to their rank in the official ladder.
So he also had to defend against cheaters, un-sync games etc. He was always top notch, but he had to adjust his rating accordingly, due to cheaters.
Almost all at the top did points trading. Smurf accounts, the system, some refusing to play against weaker players, or some playing DM to get points faster. Also some game "hacks", like the farming bug etc. that gave you the edge in early FLUSHing games.
So take this: 1850 is extremely good in RM 1vs1. 2k+ players are exceptionally good at micro-management. A skill to be learned.
I was part of CN, you might remember this clan from our most famous player, Lightning_CN. Greets to Force, Gwenny etc. where ever you are! :)
PS: There is a book from L_Clan_Chris at Amazon. Some knowledge bites to digest.