Since I feel somewhat responsible for you making this type of play I'll give you my take on it. I hate using words like never or always so I'll just say I would USUALLY NEVER use more than 3 teams when making this type of bet. If I can't get the number I want by just adding 1 or 2 more teams I'll just bet the game at the number listed or lay off the game entirely. When you get up to 5 and 6 team parlays even with 21 point favorites you'll lose more than you think. G/L on this one but I would limit my number of teams in the future.