RSI?

It has been three weeks of riding with my Spesh BG Ergo grips on the bars and I am starting to get a funny left wrist ( I am right handed before any comments are made). The pain is running on the inside from the base of my thumb, I have also noticed once or twice that at night it starts to lock up. The grips are a more comfy than the standard ones that were fitted and indeed I have had non of the usual numbness. Anyone got any ideas?
www.justgiving.com/aidyneal Cycling Manchester to Blackpool. Look out for number 1691
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