Welcome back :) I'd be a bit more than "pretty sure" before opening the wallet for new injectors. Check the FAQ section for articles on "hesitation" and "rough idle". Also search for Ash's 6 Ps posting. I'd work through all of those first. After all rough idle and hesitation can be cured just by tightening that loose vacuum/boost/fuel hose vs $1,000 worth of parts that cange nothing