Hi please can somebody tell me how I turn off brackets around attribute weights?

I currently have the following set up showing:

250g (+0.25kg)
500g (+£3.50) (+0.5kg)
750g (+£7.00) (+0.75kg)
1kg (+£10.50) (+1kg)
2kg (+£24.50) (+2kg)


And I would like it to appear as follows:

250g +0.25kg
500g (+£3.50) +0.5kg
750g (+£7.00) +0.75kg
1kg (+£10.50) +1kg
2kg (+£24.50) +2kg

Also I would like to know how I turn off +0.25kg, +0.5kg, +0.75kg etc so the attribute weights are shown as follows:

250g
500g (+£3.50)
750g (+£7.00)
1kg (+£10.50)
2kg (+£24.50)

Or

250g
500g +£3.50
750g +£7.00
1kg +£10.50
2kg +£24.50


Any help would be appreciated.

Many Thanks

Nick