Eugene Laverty feels Milwaukee Aprilia's key area of improvement is engine braking as he struggling to maximise the package under braking and corner entry but has renewed confidence after the official World Superbike test at Aragon.

The 2013 World Superbike runner-up endured a frustrating Aragon race weekend with eighth and ninth place finishes and despite it being his best results of the year it is a mark off Laverty's target of podiums.

The Milwaukee Aprilia rider says he leaves the Aragon test with a timely confidence boost having found improvements with the RSV4 RF's electronics as he looks to make vital gains in the corners having struggled with engine braking and corner entry.

"I'm content with the test compared to the race weekend as we managed to complete a lot of laps and got a lot of work done so the team worked very well," Laverty told "As a rider we are always going to be impatient as we always want more. I wanted a huge step and we've made progress in the right direction but we still need to keep improving.

"We went through a few things, electronics to improve engine braking, because our biggest issue is trying to stop the bike and to turn so it was focused on electronics and mechanical issues to try to get some grip in that area. We made gains and learnt a lot at this track.

"We don't have any more tests planned so we will head straight to Assen after assessing all the information we gained from the test to try to make another step. Three rounds are already done and we need to make steps towards the podium."

Laverty is expecting to take up a new engine for the Assen round on the 28-30 April as he heads to a circuit he has mixed memories at in World Superbikes. Having claimed victory in race two in 2013 but suffered a double DNF in 2014 before his two-year stint in MotoGP.