embodiment shown in fig4 adjustment system 80 includes a threaded vertical adjustment crank 82 which is fixedly attached at a lower end 84 thereof to third compaction surface 54 vertical adjustment crank 82 threads into a threaded mount 86 fixedly coupled to edger mounting plate 88 third compaction surface 54 is pivotally coupled to a pivot plate 81 which is fixed to first compaction surface 52 a pivot pin 83 extends through pivot plate 81 into third compaction surface 54 by turning vertical adjustment crank 82 second and third compaction surfaces 53 54 are vertically adjusted as crank 82 is held by threaded mount 86 third compaction surface 54 may include a rounded rear edge to accommodate pivoting motion if necessary as shown in fig6 second and third compaction surfaces 53 54 can also be retracted such that their lowermost edges are even or flush with rearward edge 58 of first compaction surface 52 and or screed 40 an or screed extender 48 the edges that second and third compaction surface 53 54 will be flush with will depend on the vertical positioning of edger 50 by a vertical positioning system 150 discussed below and the degree of retractability of surfaces 52 54 in its fully retracted position outermost edge 70 of second compaction surface 53 is substantially flush with an inner surface of end gate 49 such that flexible seal strike off 68 is not in use in this retracted position edger 50 need not be removed during the.