If you have replaced the O-ring and sealed it with Ultra Copper RTV the way I described and it still leaks you have a bad seal in the water pump. When the seals go bad you will get antifreeze or oil or a combination of both dripping from the lowest bolt on the pump. I don't recommend pulling the pump, disassembling it and replacing the seals as there are too many things to go wrong and then you will be pulling it again. If you suspect the pump is bad just replace it. Best price I found is from Cheapcycleparts dot com about 160 bucks I think.
You also don't need to do it the way the svc manual describes, there is no need to drain the coolant, do it this way.....
1 Pull the left and right side fairings.
2 Have the moto on a rear wheel stand so it is level and the rear is higher than the front.
3 Use two pair of locking hose clamp pliers (harbor freight) to clamp the hoses just behind the pump clamps.
4 Loosen and remove the two coolant hoses from the pump, have a drain pan handy as you will lose a small amount of fluid.
5 Remove the bolts holding the pump assy to the engine.
6 Have the new pump ready to install as you gotta be quick so you don't lose a lot of oil.
7 Wiggle the old pump a bit and pull it STRAIGHT out, align the slot in the new pump to match the orientation of the old one and push the new pump STRAIGHT in. It helps to lube the new O-ring on the new pump with a little oil or I use trans gel/vaseline. You don't want to damage or tear the new O-ring on assembly.
8 Reinstall the two coolant hoses then loosen the bleed screw on the pump till a bit of coolant starts to come out, tighten the bleed screw and top off your coolant level in the radiator, you lose about a pint that was in the old pump.
9 Add about a pint or half quart of new engine oil that was lost when the pump came out. Your amount will vary by how fast you worked, just top it back off.
10 Let the moto sit for 24 hours for the RTV you put behind the O-ring as posted previosly to cure.
11 Fire it up and let it get to full operating temp, the fan needs to cycle at least once. Retorque the mounting bolts and hose clamps. If nothing leaks you are golden.
12 Reinstall the left and right fairings, put on your helmet and go for a ride.
You might see a little (like a drop) oil or antifreeze come out over the next couple of rides, no worries it's the seals getting conditioned/ softened as a little fluid works into the labyrinth of the seal.
If you do it it like I explained it should only take you 20 minutes or so to replace the pump. If you do it as described in the manual you will be farting around trying to bleed the air from the coolant sytem forever it will seem like.
Then go in the house and pop a cold beer while patting yourself on the back 'cuz you just saved some fat cash from what the dealer would have charged you! Cheers