Re: Skipping & Chattering wipers.
I just changed my wipers on my 147. They weren't spilt, but they kept on scraping every 2 weeks, despite cleaning them with Meths on each occasion.
Looking at ePer, there are about 7 or 8 varieties!!
When I went into the parts dept to get mine, the guy who I spoke to (who really knows his stuff) said it was critical to get the correct (original) blades for the car.
Therefore, if you go to Halfords, or buy on eBay etc, you will not necessarily get the ORIGINALS you had on the car when it was made, even if they are the same manufacturer.