CWM through ROM manager

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http://forum.xda-developers.com – Hi all, I saw somewhere that lfashing CWM through ROM manager is unstable. is this still the case? or can I safely flash CWM from ROM manager and have it stick through reboots? also, do I need to factory reset when flashing custom recovery for good measure? (currently I'm rooted with busybox only, stock ROM) thanks (HowTos)